CLAS Physics Database

Measurement E151M3128

Experiment: EG4
Year: 2016

Experiment comment:

Final asymmetry results for the ep-> e pi+ (n) channel extracted from CLAS/EG4 data obtained using a longitudinally polarized beam and a longitudinally polarized NH3 target (CAA HS07-02).
Spokesperson: Xiaochao Zheng
Reaction: ep → π+n
Polarization: beam (longitudinal), target (longitudinal)
Quantity: ALU
εL: 0.0269
Q2: 0.0348 GeV2
W: 1655.0 GeV
Ebeam: 1.9889 GeV
ε: 0.7866

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.35 66.0 0.2219 0.2883
0.35 270.0 0.5037 0.2341
0.35 282.0 0.035 0.2646
0.45 78.0 0.351 0.226
0.45 90.0 -0.2186 0.264
0.45 126.0 -0.0195 0.2564
0.45 270.0 0.1862 0.2011
0.45 282.0 0.149 0.2732
0.45 294.0 -0.0446 0.243
0.45 330.0 -0.0948 0.2756
0.55 126.0 0.1512 0.2127
0.55 138.0 -0.0662 0.2614
0.55 198.0 0.1129 0.2716
0.55 210.0 -0.2372 0.2547
0.55 222.0 0.2573 0.2638
0.55 258.0 -0.3374 0.2269
0.55 270.0 -0.5236 0.2181
0.55 282.0 0.3708 0.2478
0.65 66.0 0.0291 0.267
0.65 114.0 0.0611 0.2755
0.65 126.0 -0.5129 0.2156
0.65 138.0 0.386 0.1981
0.65 210.0 0.056 0.2379
0.65 222.0 -0.5682 0.1979
0.65 246.0 -0.7052 0.1784
0.65 282.0 0.4112 0.208
0.75 66.0 -0.1429 0.2435
0.75 78.0 -0.0873 0.2683
0.75 114.0 -0.2325 0.2568
0.75 126.0 0.3857 0.261
0.75 198.0 0.0791 0.2743
0.75 210.0 -0.0855 0.2031
0.75 222.0 -0.1483 0.2044
0.75 234.0 -0.5894 0.2023
0.75 258.0 -0.036 0.2491
0.75 270.0 -0.3056 0.1978
0.75 282.0 -0.0007 0.2073
0.75 294.0 -0.3173 0.2517
0.85 114.0 -0.1144 0.2117
0.85 126.0 0.0192 0.2182
0.85 138.0 -0.1413 0.2841
0.85 198.0 -0.0302 0.2594
0.85 210.0 0.1285 0.2351
0.85 222.0 0.1397 0.2363